Single-component thermoplastic polyurethane adhesive and preparation method thereof

A thermoplastic polyurethane and adhesive technology, used in polyurea/polyurethane adhesives, adhesives, non-polymer adhesive additives, etc., can solve the problems of easy thermal oxidative degradation, unfavorable mass production, poor oxidation resistance, etc. Accelerate the curing speed, improve the bonding effect, and the effect of good extraction resistance

Active Publication Date: 2021-01-15
深圳善跑体育产业集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyurethane adhesive is an important part of the rapidly developing polyurethane resin. It has excellent performance and has been widely used in many aspects. It is one of the important varieties among the eight synthetic adhesives. Polyurethane adhesive has excellent shear resistance Shear strength and impact resistance, suitable for various structural bonding fields, and has excellent flexibility, not only strong adhesion, but also excellent cushioning and shock absorption functions, low temperature and ultra-low temperature of polyurethane adhesives The performance exceeds all other types of adhesives. Thermoplastic polyurethane adhesives are synthetic polyurethane adhesives made of thermoplastic polyurethane. They soften and bond when heated, and harden after cooling to have a certain strength. The existing thermoplastic polyurethane adhesives have high costs and are not conducive to mass production. Production, while the oxidation resistance is poor, prone to thermal oxidation degradation for a long time

Method used

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  • Single-component thermoplastic polyurethane adhesive and preparation method thereof
  • Single-component thermoplastic polyurethane adhesive and preparation method thereof
  • Single-component thermoplastic polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1 A kind of one-component thermoplastic polyurethane adhesive and preparation method thereof, comprising:

[0030] 1. Preparation of polyurethane prepolymer

[0031] Put 150 parts of hydroxyl compound in a stirred tank, the temperature of the stirred tank is 100-120°C, the pressure is 10-20mbar, the speed is 180-230rpm, dehydrate, lower the temperature to 80-90°C, pass in an inert gas, and stir During the process, add 30 parts of polyisocyanate, raise the temperature to 90-110°C, add 0.2 parts of catalyst for prepolymerization, and obtain a prepolymer;

[0032] The polyhydroxy compound is polybutylene succinate, the molecular weight is 1000-3000g / Pmol, and the polyisocyanate component is diphenylmethane diisocyanate;

[0033] The catalyst is one or two mixtures of bismorpholino diethyl ether and dibutyltin dilaurate. Since the one-component polyurethane prepolymer requires long-term storage stability, bismorpholine diethyl ether and dibutyltin dilaurate Dib...

Embodiment 2

[0039] Embodiment 2 A kind of one-component thermoplastic polyurethane adhesive and preparation method thereof, comprising:

[0040] 1. Preparation of polyurethane prepolymer

[0041] Put 165 parts of hydroxyl compound in a stirred tank, the temperature of the stirred tank is 100-120°C, the pressure is 10-20mbar, the speed is 180-230rpm, dehydrate, lower the temperature to 80-90°C, pass in an inert gas, and stir During the process, 22.5 parts of polyisocyanate are added, the temperature is raised to 90-110°C, and 1 part of catalyst is added for prepolymerization to obtain a prepolymer;

[0042] The polyhydroxy compound is polybutylene succinate, the molecular weight is 1000-3000g / Pmol, and the polyisocyanate component is diphenylmethane diisocyanate;

[0043] The catalyst is one or two mixtures of bismorpholino diethyl ether and dibutyltin dilaurate. Since the one-component polyurethane prepolymer requires long-term storage stability, bismorpholine diethyl ether and dibutylti...

Embodiment 3

[0049] Embodiment 3 A kind of one-component thermoplastic polyurethane adhesive and preparation method thereof, comprising:

[0050] 1. Preparation of polyurethane prepolymer

[0051] Put 180 parts of hydroxyl compound in a stirred tank, the temperature of the stirred tank is 100-120°C, the pressure is 10-20mbar, the speed is 180-230rpm, dehydrate, lower the temperature to 80-90°C, pass in an inert gas, and stir During the process, 25 parts of polyisocyanate are added, the temperature is raised to 90-110°C, and 2 parts of catalyst are added for prepolymerization to obtain a prepolymer;

[0052] The polyhydroxy compound is polybutylene succinate, the molecular weight is 1000-3000g / Pmol, and the polyisocyanate component is diphenylmethane diisocyanate;

[0053] The catalyst is one or two mixtures of bismorpholino diethyl ether and dibutyltin dilaurate. Since the one-component polyurethane prepolymer requires long-term storage stability, bismorpholine diethyl ether and dibutylti...

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PUM

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Abstract

The invention relates to the technical field of polyurethane adhesives, in particular to a single-component thermoplastic polyurethane adhesive and a preparation method thereof. The single-component thermoplastic polyurethane adhesive is prepared from a polyurethane prepolymer, a filler, a solvent, a catalyst, a thickener and an antioxidant; according to the single-component thermoplastic polyurethane adhesive prepared by the invention, by adding the filler, the yield of the adhesive can be increased, the cost can be reduced, the use performance such as the shrinkage rate can be improved, thehardness, the strength and the elasticity can be improved, the added antioxidant has good extraction resistance, high thermal stability and long persistence, can be used as a stabilizer during adhesive processing, meanwhile, thermal oxidative degradation of the adhesive in the long-term aging process is prevented, the added fumed silica small particles form a network structure to inhibit colloid flowing, the curing speed is increased, the bonding effect is improved, the sealing performance and the impermeability of the product are also improved, and meanwhile, the fumed silica small particleshave a certain effect on thickening of a glue solution as a rheological additive in processing.

Description

technical field [0001] The invention relates to the technical field of polyurethane adhesives, in particular to a single-component thermoplastic polyurethane adhesive and a preparation method thereof. Background technique [0002] Polyurethane adhesive is an important part of the rapidly developing polyurethane resin. It has excellent performance and has been widely used in many aspects. It is one of the important varieties among the eight synthetic adhesives. Polyurethane adhesive has excellent shear resistance Shear strength and impact resistance, suitable for various structural bonding fields, and has excellent flexibility, not only strong adhesion, but also excellent cushioning and shock absorption functions, low temperature and ultra-low temperature of polyurethane adhesives The performance exceeds all other types of adhesives. Thermoplastic polyurethane adhesives are synthetic polyurethane adhesives made of thermoplastic polyurethane. They soften and bond when heated, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/06C09J11/04C09J11/06
CPCC09J175/06C09J11/04C09J11/06C08K2003/265C08L2201/08C08K3/26C08K3/34C08K3/346C08K9/10C08K7/26C08K5/1345
Inventor 张烨
Owner 深圳善跑体育产业集团有限公司
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